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How to install Slack ↔ WxO MCP Gateway in Gemini CLI

Gemini CLI was replaced by Antigravity CLI in June 2026. On an enterprise licence or paid API key you can still install Slack ↔ WxO MCP Gateway by running "gemini mcp add slack-wxo-mcp-gateway npx -y @markusvankempen/slack-wxo-mcp-gateway", then type /mcp to check it.

Built from the published package · server updated 3 months ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add slack-wxo-mcp-gateway npx -y @markusvankempen/slack-wxo-mcp-gateway
  2. 2

    Check it

    Inside Gemini CLI, type /mcp to list servers and tools.

MCP servers run with your permissions. If Slack ↔ WxO MCP Gateway needs an API key, add it under env in the config. Check its README.

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Questions

Does Slack ↔ WxO MCP Gateway work in Gemini CLI?

Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and Slack ↔ WxO MCP Gateway installs with the steps above.

Slack ↔ WxO MCP Gateway does not show up in Gemini CLI. What now?

Restart Gemini CLI fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Slack ↔ WxO MCP Gateway safe?

It scores 54 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.